Showcase refrigerator



Onu.

J. SCHULDE SHOWCASE REFRIGERATOR Filed Nov. 22. 1921 Dec. 11, 1923.

Patented Dec. ll, 1923.

UNITED s'rA'rr-:sv PAT 1,416,926 ENT OFFICE.

n JOHN SCHULDE, OF ST. LOUIS, MISSOURI, ASSIGNOR TO HARRY L. HUSSMANN REFRIGERATOR & SUPPLY COMPANY, OF-ST. LOUIS, MISSOURI, LA. CORPORATION.

F MISSOURI.

SHOWCASE REFRIGERATOR.

Application tiled November 22,1921. Serial No. 516,935.

To aZZ whom it may concern.'

Be it known that I, J oHN Soirumn a citizen of the United States, and residing at St. Louis, Missouri, have invented the new and useful Improvement in Showcase Refrigerators, of which the following is a specification.

This invention relates to refrigerators, and more particularly to show-case refrigerators in which -the refrigerating com rtment is also a display compartment an the refrigerant container is mounted at one end thereof.

One of the objects of this invention is to 16 provide a refrigerant container which shall ave a large surface adaptable for' contact with the air to be cooled and which shall be arrangedto be easily packed with a freezing m1xture without danger of clogging. Y

Another object of this invention is to pro vide a'. refrigerating unitarranged so that the air to be cooled may circulate freel about the refrigerant container and inwhicli the brine may be further utilized to cool the air circulating along the bottom of the refri erating compartment. i

liurther objects will appear from the detail description taken in connection with the accompanying drawing, in which Figure 1 is a parti-al longitudinal sectional view of a refrlgerator embodying this' invention; y l

Figure 2 is a section on line 2-2, Figure 1; and f Figure 3 is a section on. line 3 3, Figure 1.v

Referring to the accompanying drawing the refrigerator comprises a casing 1 othe usual doubleQwalled construction and equipped on the top and sides with double- 0 walled glass panels 2 and 3 respectively. At

the end of the refrigerating compartment 4 is located a refrigerant container comprising an upper header 5 having a series of downwardly extending le 6 opening there- 4l from and a lower header sjoining said legs at the bottom.

The header 5 is substantiall rectangular in cross-section and is provide lat the front thereof facing the refrigerating compartr 5o ment 4 with a series of perforations 8 through which the air is adapted to enter the refrigerant container so as to come in contact with the freezing mixture. These perforations 8 may be covered with a screen u so as to prevent the entrance of foreign Inatter. The rear wall of the header 5 is similarly perforated as shown at 9 to allow the a1r to pass outwardly therefrom.

The legs 6 are open at the bottom and top and are tapering in form being smaller at the bottom so tha-t the freezing mixturel may be packed therein. There are a-series of these le spaced from one another so that the air may circulate freely therearound.

The lower header` 7 joins the bottoms rip pan 13 is'arranged below the refri erant container to catch the drippingsI an is provided withan overflow 14 adapted to discharge into a second drip panY 15 extending along the bottom of the refrigerating compartment 4. The brine received fromthe pan 13 circulates through the pan 15 from which it is discharged through an overliow 16 into a trap 17 in of the refrigerator from which it maybe discharged to the sewer. The pan 15is constructed as shown in cross-section in Figure 3 having its top wall-18 sloping down- .wardlytoward the outside so as to drain ofi" 'water of condensation and having its lower wall 19 sloping upwardly toward both sides so as to provide passages 20 for circulation of air under and along thel pan 15.

The interior of the refrigerating compartment 4 is provided with shelves 21 for su porting the goods to be' cooled'.

n operation the goods placed o'n the shelves 21-tend to warm the air which 'comes in contact therewith and to deliver to that air certain odors and impurities. This warm air rises to the top of the refrigerating com artment along which -it flows to the right, igure 1, to replace the air which has cooled by contact with the refrigerant` container in The warmest air'ilows through the perforations 8 into the refrigerant container Wghereby contact with the freezing mixture, it is the/bottom ,the| end of the compartment.'-

rapidly chilled. By this chilling the moisture carried by the air is condensed andl deposited upon the freezing mixture and with it the 'impurities 4carried by the air are also deposited. The chilled and purified a'ir passes out through the perforations 9, thence down along the rear of the refrigerant container and outwardly toward the refrigerating compartment 4 passing around and coming into intimate contact with the exterior surfaces of the headers 5 and 7 and the legs 6.. By such contact the air is further chilled and caused to move to the bottom of the refrigerating compartment, some of it passing along the surface of the brine Iin the pan 13. Other portions of the warm air will strike the header 5, become chilled by contact therewith and thenl pass downward along the legs 6 and over the header 7 The air then flows out along the bottom of the compartment 4, some of it over the top and sides of the pan l5 and some through the passages 20. The air passing through the passages 20 is maintained in a chilled condition throughout its travel until it emerges at the end of such passage. In this way cooled air is delivered to the extreme end of the refrigerating compartment 4. The chilled air from the bottom of the compartment 4 rises as it is warmed by contact with the goods on the shelves 21 to the top of said compartment and the circulation is thereafter repeated. In this way a very low temperature can be maintained in the refrigcrating compartment. v

y It will be noted that in the counter refrigerator embodying this invention the elongated show-case provided with transparent panels has mounted at one end thereof a refrigerant container adapted to receive a freezing mixture. This container is constructed and arranged (in the particular embodiment shown, by perforation of the front andgback walls at the upper end of the container) to provide a top passage over the freezing mixture in the top of the container, while the arrangement is also such as to provide passages along the back and bottom of the container connecting with the top passage, in order to induce a flowof air through the top passage and down the back passage. The container-as well as the drip pan is also adapted and positioned to cause a current of. air to circulate in a path from the bottom ofthe container along the bottom of the show case and in a return path along the top of the show case into the top of the container. This arrangement not only results in keeping the entire show case cool lbut by directing the current of air along the show case instead of transversely thereto, clouding of the glass panels is avoided. Furthermore any moisture or volatile matter passing over the freezing mixture becomes deposited therein and on the walls of the container so that the air is maintained dry and odorless. s v

It is obvious that various changes may be made in details of construction without departing from the spirit of this invention; it

is, therefore, to be understood that this invention is not to be limited to the specific details shown and described.

Having thus described the invention, what is claimed is:

l.v A counter refrigerator comprising, an elongated show-case provided with transparent panels, a freezing mixture container mounted at one end of said show case and consisting of upper and lower headers and legs connecting said headers, said container being constructed and arranged to provide a top passage and passages along its back and bottom connecting with said top passage, in order to induce a flow of air through said top passage and down said back passage, said container being adapted and positioned to cause a current of air to circulate in a path from the bottom of said container along the bottom of the show case and in a return path along the top of the show case into the top of said container.

2. A counter refrigerator comprising, an elongated show-case provided with transparent panels, a freezing mixture container mounted at one end of said show-case and consisting of upper and lower headers and legs connecting said headers, said container bemg constructed and arranged to provide a top passage and passages along its back and bottom connecting with said top passage, in order to induce a flow of air through said back passage, and a drip pan extendin along the bottom of the show-case beyon saidcontainer and adapted to receive the brine therefrom, said container and said pan being adapted and positioned to cause a current of air to circulate in a path from the bottom of said container along the bottom of the show-case and in a return path along the top of the show-case into the top of said container.

3. A counter refrigerator comprising, an elongated show-case provided with transparent panels, a freezing mixture container mounted at one end of said show-case and consisting of upper and lower headers and lll legs connecting said headers, said top header lll and in a return path along the top` of the shofvggfcase into the top of the container.

'1J/FA, counter refrigerator comprising, an elongated show-case provided with transparent panels, a freezing 'mixture container mountedv/at one end of said show-case and consisting `of upper and lower headers and legs connecting said headers, the front and back Wallsr of said top header being perforated to provide a top passage over the freezing mixture therein, said container being constructed and arranged to provide passages along its back and bottom connecting with said top passage, in order to induce a flow of air through said top passage and down said back passage, said container being adapted and positioned to cause a current of air to circulate in a path from the bottom of said container along the bottom of the show-case and in a return path along the top of the show-case into the top of said container.

In testimony whereof I affix my signature this 9th day of May, 1921.

JOHN SCHULDE. 

